EP0361105B1 - Feeding attachment, particularly for sheet-printing machines - Google Patents

Feeding attachment, particularly for sheet-printing machines Download PDF

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Publication number
EP0361105B1
EP0361105B1 EP89115817A EP89115817A EP0361105B1 EP 0361105 B1 EP0361105 B1 EP 0361105B1 EP 89115817 A EP89115817 A EP 89115817A EP 89115817 A EP89115817 A EP 89115817A EP 0361105 B1 EP0361105 B1 EP 0361105B1
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EP
European Patent Office
Prior art keywords
sheet
locking
catch
feeder
stroke cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89115817A
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German (de)
French (fr)
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EP0361105A1 (en
Inventor
Bert Cappel
Hanns-Otto Haas
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Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT89115817T priority Critical patent/ATE75665T1/en
Publication of EP0361105A1 publication Critical patent/EP0361105A1/en
Application granted granted Critical
Publication of EP0361105B1 publication Critical patent/EP0361105B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/20—Controlling associated apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/10—Reciprocating or oscillating grippers, e.g. suction or gripper tables

Definitions

  • the invention relates to a sheet application device for sheet processing and processing machines, in particular for sheet printing machines, with front marks periodically pivotable by a non-lockable cam mechanism and a locking device which can be controlled by a sheet control device and which holds the sheets on the system table when locked.
  • Sheet feeding devices are provided with a device for blocking the sheet feed in order to prevent the entry of sheets that do not fit properly or of double sheets into the machine, for example a printing machine. These locking devices become effective if a sheet control device detects a position that does not match or if the sheet is missing or the double sheet is being fed.
  • locking marks that can be held in place on the feed table are provided for blocking the sheet feed, which, as long as there is no blocking, perform periodic pivoting movements synchronously with the front marks.
  • the swivel movements are generated by a cam and a roller lever and transmitted to a branded drive shaft via a coupling gear.
  • Each front mark and each blocking mark is assigned a drive gear with a double rocker arm, which is rotatably mounted on the brand drive shaft and non-positively connected in one direction of rotation via a tension spring and in the other direction of rotation via an adjustable stop with a drive lever which is fixed on the brand drive shaft.
  • the periodic swiveling movement of the brand drive shaft is transmitted from the drive lever in the swiveling phase of the brands to the system table via the adjustable stop and in the swiveling phase via the tension spring to the double rocker arm, which is firmly connected to the brands via a coupling.
  • the double rocker of the locking marks additionally has a stop piece on a lever arm which, in the locked position, bears against a locking block of a locking lever combination which can be actuated by an electromagnet. If the sheet system does not match, the sheet control device actuates the electromagnet, which causes the locking block to block the double rockers of the locking marks via the stop piece, thereby holding the locking marks on the feed table.
  • the invention has for its object to provide a sheet feeder of the type mentioned, which is characterized by simple structure and great reliability and which is suitable for high machine speeds.
  • this object is achieved in that the pivoting movement is transmitted only by rigid members of the cam mechanism in the pivoting phase of the front brands and that Locking device is formed by catch hooks which are moved into a catching position on the system table by a control device independent of the cam mechanism when the sheet control device is blocked.
  • a sheet application device is created in which the movement of the front marks is completely independent of the movement of the catch hook of the locking device.
  • the front mark drive can be designed in the form of a positive control in the sheet application device according to the invention, which permits high accelerations and thus high machine speeds. Since the invention also prevents parts of the drive device of the brands from being blocked, impact loads and resulting interference vibrations are largely avoided.
  • the drive of the locking hooks which do not have to fulfill a brand function, can be simple and relatively light, so that when the locking hooks are actuated no significant inertia forces occur and no disturbing vibrations are caused. It is also advantageous that the sheet feed device can be actuated at any time, since the pivoting of the catch hooks out of the blocking position is independent of the particular machine position.
  • the catch hooks pivotably mounted on the system table can be moved from their pivoting position into the catch position by pneumatic short-stroke cylinders, the short-stroke cylinders being controllable by an electro-pneumatic quick-closing solenoid valve.
  • pneumatic short-stroke cylinders the short-stroke cylinders being controllable by an electro-pneumatic quick-closing solenoid valve.
  • the sheets coming from a sheet feeder are brought up to front marks 2.
  • the front brands 2 are fastened on a front brand drive shaft 3, which is mounted below the system table 1 and can be rotated via a drive lever 4.
  • the drawing shows the front marks 2 in the sheet alignment position, into which they are pressed by tension springs 5. Stops (not shown) ensure precise positioning of the front marks 2.
  • the swung-away position of the front marks 2 is indicated by dash-dotted lines.
  • the drive lever 4 is connected by a coupling rod 6 to a double-armed roller lever 7 which is pivotally mounted on an axis 8 fixed to the frame.
  • a pressure spring 9 By means of a pressure spring 9, the roller lever 7 with the roller 10 mounted at its free end is pressed against a front mark control cam 11 which is driven synchronously with the machine connected to the sheet application device.
  • the direction of rotation of the control cam 11 is indicated in the drawing by an arrow 12.
  • the swiveling of the front marks 2 takes place through the sector a of the control cam 11, the roller lever 7 being under tension the pressure spring 9 is moved to the dot-dash position.
  • the high acceleration forces that occur are transmitted directly from the control cam 11 via the roller 10 to the roller lever 7 and are forwarded by this via the coupling rod 6 and the drive lever 7 to the front marker drive shaft 3. It is therefore only in the pivoting phase of the front brands 2 rigid members of the front brand drive effective.
  • the spring force of the pressure spring 9 can remain comparatively low, since a considerably larger angle of rotation of the control cam and thus a considerably larger period of time is available for the pivoting phase.
  • the device for blocking the sheet feed consists of catch hooks 13 which are attached to a shaft 14.
  • the shaft 14 is mounted below the system table 1 in bearings 15 and is pivoted via a fork lever 16 which can be pivoted by a pneumatic short-stroke cylinder 17 which is also attached to the system table 1.
  • the short-stroke cylinder 17 contains a compression spring 18 which strives to move the piston of the cylinder into a basic position in which the catch hooks 13 are pivoted out of their catch position. This basic position is shown in the drawing with dash-dotted lines.
  • the short-stroke cylinder 17 is controlled by an electro-pneumatic quick-closing solenoid valve 19, which is controlled electrically by a sheet control device and is switched into a position in which it does not fit the sheet, in the absence of a sheet or in the case of a double sheet feed, in a position in which it connects the short-stroke cylinder 17 to a compressed air shaft .
  • the piston of the short-stroke cylinder 17 actuated in this way pivots the shaft 14 via the fork lever 16, as a result of which the catch hooks 13 reach the catch position and block the sheet feed to the machine.
  • the sheet control device switches the quick-closing solenoid valve 19 back into its starting position, thereby relieving the piston of the short-stroke cylinder 17 and the catch hooks 13 are pivoted away.
  • the catch position for machine run is decoupled via the manual signal "paper run”.

Abstract

In the feeding attachment, the periodically swivellable front markers (2) are driven by a non-lockable cam gear (6-10), in which only rigid members of the cam gear (6-10) are effective in the swivelling- away phase of the front markers (2). To lock the sheet feeder in the case of oblique sheets or faulty sheets, catcher hooks (13) are provided which can be moved into their catching position, independently of the cam gear (6-10) of the front markers (2), by a pneumatic short-stroke cylinder (17) which can be controlled by an electropneumatic quick-action solenoid valve (19) operating in dependence on a sheet control device. The feeding attachment permits a high speed of machine. <IMAGE>

Description

Die Erfindung betrifft eine Bogenanlegevorrichtung für Bogen be- und verarbeitende Maschinen, insbesondere für Bogendruckmaschinen, mit durch ein nicht sperrbares Kurvengetriebe periodisch schwenkbaren Vordermarken und einer durch eine Bogenkontrolleinrichtung steuerbaren Sperrvorrichtung, die bei Sperrung die Bogen am Anlagetisch festhält.The invention relates to a sheet application device for sheet processing and processing machines, in particular for sheet printing machines, with front marks periodically pivotable by a non-lockable cam mechanism and a locking device which can be controlled by a sheet control device and which holds the sheets on the system table when locked.

Bogenanlegevorrichtungen sind mit einer Vorrichtung zum Sperren der Bogenzufuhr versehen, um den Einlauf von nicht paßgerechten Bogen oder von Doppelbogen in die Maschine, beispielsweise eine Druckmaschine, zu verhindern. Diese Sperrvorrichtungen werden wirksam, wenn durch eine Bogenkontrolleinrichtung eine nicht paßgerechte Lage oder ein Ausbleiben des Bogens oder Doppelbogenzufuhr festgestellt wird.Sheet feeding devices are provided with a device for blocking the sheet feed in order to prevent the entry of sheets that do not fit properly or of double sheets into the machine, for example a printing machine. These locking devices become effective if a sheet control device detects a position that does not match or if the sheet is missing or the double sheet is being fed.

Bei einer bekannten Bogenanlegevorrichtung der angegebenen Art (DE-AS 1 786 314) sind zur Sperrung der Bogenzufuhr am Anlegetisch festhaltbare Sperrmarken vorgesehen, die, solange keine Sperrung erfolgt, synchron mit den Vordermarken periodische Schwenkbewegungen ausführen. Die Schwenkbewegungen werden von einer Kurvenscheibe und einem Rollenhebel erzeugt und über ein Koppelgetriebe auf eine Markenantriebswelle übertragen. Jeder Vordermarke und jeder Sperrmarke ist ein Antriebsgetriebe mit einer Doppelschwinge zugeordnet, die drehbeweglich auf der Markenantriebswelle gelagert und kraftschlüssig in der einen Drehrichtung über eine Zugfeder und in der anderen Drehrichtung über einen einstellbaren Anschlag mit einem Antriebshebel verbunden ist, der fest auf der Markenantriebswelle angeordnet ist. Die periodische Schwenkbewegung der Markenantriebswelle wird von dem Antriebshebel in der Anschwenkphase der Marken an den Anlagetisch über den einstellbaren Anschlag und in der Abschwenkphase über die Zugfeder auf die Doppelschwinge übertragen, die über eine Koppel fest mit den Marken verbunden ist. Die Doppelschwinge der Sperrmarken weist zusätzlich an einem Hebelarm ein Anschlagstück auf, welche in Sperrstellung an einem Sperrkloben einer Sperrhebelkombination anliegt, die durch einen Elektromagneten betätigbar ist. Beinicht paßgerechter Bogenanlage wird von der Bogenkontrolleinrichtung der Elektromagnet angesteuert, wodurch der Sperrkloben über das Anschlagstück die Doppelschwingen der Sperrmarken blockiert und dadurch die Sperrmarken am Anlegetisch festhält. Die Vordermarken, deren Doppelschwingen keine Anschlagstücke aufweisen, bewegen sich periodisch weiter. Mit dieser bekannten Vorrichtung lassen sich die bei der Sperrung auftretenden Massenkräfte und stoßartigen Belastungen reduzieren. Nachteilig ist jedoch, daß ein erheblicher getriebetechnischer Aufwand benötigt wird, der die Funktionssicherheit verringert und einen erheblichen Bauraum benötigt. Weiterhin besteht der Nachteil, daß die Federkräfte der Zugfedern zwischen den Antriebshebeln und den Doppelschwingen der Maschinengeschwindigkeit angepaßt werden müssen und bei höheren Maschinengeschwindigkeiten so groß bemessen werden müssen, daß die Lebensdauer des Kurvengetriebes erheblich herabgesetzt wird.In a known sheet feeder device of the type specified (DE-AS 1 786 314), locking marks that can be held in place on the feed table are provided for blocking the sheet feed, which, as long as there is no blocking, perform periodic pivoting movements synchronously with the front marks. The swivel movements are generated by a cam and a roller lever and transmitted to a branded drive shaft via a coupling gear. Each front mark and each blocking mark is assigned a drive gear with a double rocker arm, which is rotatably mounted on the brand drive shaft and non-positively connected in one direction of rotation via a tension spring and in the other direction of rotation via an adjustable stop with a drive lever which is fixed on the brand drive shaft. The periodic swiveling movement of the brand drive shaft is transmitted from the drive lever in the swiveling phase of the brands to the system table via the adjustable stop and in the swiveling phase via the tension spring to the double rocker arm, which is firmly connected to the brands via a coupling. The double rocker of the locking marks additionally has a stop piece on a lever arm which, in the locked position, bears against a locking block of a locking lever combination which can be actuated by an electromagnet. If the sheet system does not match, the sheet control device actuates the electromagnet, which causes the locking block to block the double rockers of the locking marks via the stop piece, thereby holding the locking marks on the feed table. The front brands, whose double wings have no stop pieces, move periodically. With this known device, the inertial forces and shock-like loads occurring during the blocking can be reduced. However, it is disadvantageous that a considerable expenditure on gear technology is required, which reduces functional reliability and requires a considerable installation space. Furthermore, there is the disadvantage that the spring forces of the tension springs between the drive levers and the double rockers must be adapted to the machine speed and must be dimensioned so large at higher machine speeds that the service life of the cam mechanism is considerably reduced.

Der Erfindung liegt die Aufgabe zugrunde, eine Bogenanlegevorrichtung der eingangs genannten Art zu schaffen, die sich durch einfachen Aufbau und große Zuverlässigkeit auszeichnet und die für hohe Maschinengeschwindigkeiten geeignet ist.The invention has for its object to provide a sheet feeder of the type mentioned, which is characterized by simple structure and great reliability and which is suitable for high machine speeds.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß in der Abschwenkphase der Vordermarken die Schwenkbewegung nur durch starre Glieder des Kurvengetriebes übertragen wird und daß die Sperrvorrichtung durch Fanghaken gebildet wird, die bei einem Sperrsignal der Bogenkontrolleinrichtung durch eine vom Kurvengetriebe unabhängige Stellvorrichtung in eine Fangstellung am Anlagetisch bewegt werden. Mit der Erfindung wird eine Bogenanlegevorrichtung geschaffen, bei der die Bewegung der Vordermarken völlig unabhängig von der Bewegung der Fanghaken der Sperrvorrichtung ist. Hierdurch wird die Möglichkeit geschaffen, den Antrieb der Vordermarken so zu gestalten, daß auch bei hohen Maschinengeschwindigkeiten nur geringe Federkräfte erforderlich sind, da die höchsten Beschleunigungen, die in der Abschwenkphase der Vordermarken auftreten, nicht mit Hilfe von Federkräften übertragen werden müssen. Stattdessen kann bei der erfindungsgemäßen Bogenanlegevorrichtung der Vordermarken-Antrieb nach Art einer Zwangssteuerung ausgebildet sein, die hohe Beschleunigungen und damit hohe Maschinengeschwindigkeiten zuläßt. Da bei der Erfindung auch eine Sperrung von Teilen der Antriebsvorrichtung der Marken unterbleibt, werden stoßartige Belastungen und daraus resultierende Störschwingungen weitestgehend vermieden. Der Antrieb der Sperrhaken, die keine Markenfunktion erfüllen müssen, kann einfach und verhältnismäßig leicht ausgebildet sein, so daß beim Betätigen der Sperrhaken keine nennenswerten Massenkräfte auftreten und keine Störschwingungen hervorgerufen werden. Es ist weiterhin von Vorteil, daß die Betätigung der Bogenanlegevorrichtung zu jedem Zeitpunkt erfolgen kann, da das Wegschwenken der Fanghaken aus der Sperrstellung von der jeweiligen Maschinenstellung unabhängig ist.According to the invention this object is achieved in that the pivoting movement is transmitted only by rigid members of the cam mechanism in the pivoting phase of the front brands and that Locking device is formed by catch hooks which are moved into a catching position on the system table by a control device independent of the cam mechanism when the sheet control device is blocked. With the invention, a sheet application device is created in which the movement of the front marks is completely independent of the movement of the catch hook of the locking device. This creates the possibility of designing the drive of the front brands so that only low spring forces are required even at high machine speeds, since the highest accelerations that occur in the swiveling phase of the front brands do not have to be transmitted with the aid of spring forces. Instead, the front mark drive can be designed in the form of a positive control in the sheet application device according to the invention, which permits high accelerations and thus high machine speeds. Since the invention also prevents parts of the drive device of the brands from being blocked, impact loads and resulting interference vibrations are largely avoided. The drive of the locking hooks, which do not have to fulfill a brand function, can be simple and relatively light, so that when the locking hooks are actuated no significant inertia forces occur and no disturbing vibrations are caused. It is also advantageous that the sheet feed device can be actuated at any time, since the pivoting of the catch hooks out of the blocking position is independent of the particular machine position.

In einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, daß die am Anlagetisch schwenkbar gelagerten Fanghaken durch pneumatische Kurzhubzylinder aus ihrer Abschwenkstellung in die Fangstellung bewegbar sind, wobei die Kurzhubzylinder durch ein elektro-pneumatisches Schnellschluß-Magnetventil steuerbar sind. Eine derartige Ausgestaltung der Sperrvorrichtung zeichnet sich durch einen einfachen Aufbau und geringe Schaltzeiten aus und eignet sich vor allem für Bogendruckmaschinen, die mit einer Druckluftversorgung ausgerüstet sind.In an advantageous embodiment of the invention it is provided that the catch hooks pivotably mounted on the system table can be moved from their pivoting position into the catch position by pneumatic short-stroke cylinders, the short-stroke cylinders being controllable by an electro-pneumatic quick-closing solenoid valve. Such a design of the locking device is characterized by a simple structure and small Switching times off and is particularly suitable for sheetfed presses that are equipped with a compressed air supply.

Die Erfindung wird nachfolgend anhand einzelner Ausführungsbeispiele näher erläutert, die in der Zeichnung dargestellt sind. Es zeigen

  • Figur 1 eine schematische Darstellung des Vordermarken-Antriebs und
  • Figur 2 eine schematische Darstellung der Sperrvorrichtung einer erfindungsgemäßen Bogenanlegevorrichtung.
The invention is explained in more detail below with reference to individual exemplary embodiments which are shown in the drawing. Show it
  • Figure 1 is a schematic representation of the front brand drive and
  • Figure 2 is a schematic representation of the locking device of a sheet application device according to the invention.

Beim Anlagetisch 1 werden die von einem nicht dargestellten Bogenanleger kommenden Bogen an Vordermarken 2 herangeführt. Die Vordermarken 2 sind auf einer unterhalb des Anlagetischs 1 gelagerten Vordermarken-Antriebswelle 3 befestigt, die über einen Antriebshebel 4 drehbar ist. Die Zeichnung zeigt die Vordermarken 2 in Bogenausrichtstellung, in die sie durch Zugfedern 5 gedrückt werden. Nicht dargestellte Anschläge sorgen für eine genaue Positionierung der Vordermarken 2. Die abgeschwenkte Stellung der Vordermarken 2 ist durch strichpunktierte Linien angedeutet.At the feed table 1, the sheets coming from a sheet feeder, not shown, are brought up to front marks 2. The front brands 2 are fastened on a front brand drive shaft 3, which is mounted below the system table 1 and can be rotated via a drive lever 4. The drawing shows the front marks 2 in the sheet alignment position, into which they are pressed by tension springs 5. Stops (not shown) ensure precise positioning of the front marks 2. The swung-away position of the front marks 2 is indicated by dash-dotted lines.

Der Antriebshebel 4 ist durch eine Koppelstange 6 mit einem doppelarmigen Rollenhebel 7 verbunden, der auf einer gestellfesten Achse 8 schwenkbar gelagert ist. Durch eine Andruckfeder 9 wird der Rollenhebel 7 mit der an seinem freien Ende gelagerten Rolle 10 gegen eine Vordermarken-Steuerkurve 11 gedrückt, die synchron mit der an die Bogenanlegevorrichtung angeschlossenen Maschine angetrieben wird. Die Drehrichtung der Steuerkurve 11 ist in der Zeichnung durch einen Pfeil 12 gekennzeichnet.The drive lever 4 is connected by a coupling rod 6 to a double-armed roller lever 7 which is pivotally mounted on an axis 8 fixed to the frame. By means of a pressure spring 9, the roller lever 7 with the roller 10 mounted at its free end is pressed against a front mark control cam 11 which is driven synchronously with the machine connected to the sheet application device. The direction of rotation of the control cam 11 is indicated in the drawing by an arrow 12.

Das Abschwenken der Vordermarken 2 erfolgt durch den Sektor a der Steuerkurve 11, wobei der Rollenhebel 7 unter Anspannung der Andrückfeder 9 in die strichpunktierte Stellung bewegt wird. Hierbei werden die auftretenden, hohen Beschleunigungskräfte direkt von der Steuerkurve 11 über die Rolle 10 auf den Rollenhebel 7 übertragen und von diesem über die Koppelstange 6 und den Antriebshebel 7 an die Vordermarken-Antriebswelle 3 weitergeleitet. Es sind daher in der Abschwenkphase der Vordermarken 2 ausschließlich starre Glieder des Vordermarken-Antriebs wirksam. Die Federkraft der Andrückfeder 9 kann vergleichsweise niedrig bleiben, da für die Anschwenkphase ein erheblich größerer Drehwinkel der Steuerkurve und damit ein erheblich größerer Zeitraum zur Verfügung steht.The swiveling of the front marks 2 takes place through the sector a of the control cam 11, the roller lever 7 being under tension the pressure spring 9 is moved to the dot-dash position. Here, the high acceleration forces that occur are transmitted directly from the control cam 11 via the roller 10 to the roller lever 7 and are forwarded by this via the coupling rod 6 and the drive lever 7 to the front marker drive shaft 3. It is therefore only in the pivoting phase of the front brands 2 rigid members of the front brand drive effective. The spring force of the pressure spring 9 can remain comparatively low, since a considerably larger angle of rotation of the control cam and thus a considerably larger period of time is available for the pivoting phase.

Die Vorrichtung zum Sperren der Bogenzufuhr besteht aus Fanghaken 13, die an einer Welle 14 befestigt sind. Die Welle 14 ist unterhalb des Anlagetisches 1 in Lagern 15 gelagert und wird über einen Gabelhebel 16 verschwenkt, der durch einen ebenfalls am Anlagetisch 1 angebrachten, pneumatischen Kurzhubzylinder 17 schwenkbar ist. Der Kurzhubzylinder 17 enthält eine Druckfeder 18, die bestrebt ist, den Kolben des Zylinders in eine Grundstellung zu bewegen, in der die Fanghaken 13 aus ihrer Fangstellung herausgeschwenkt sind. Diese Grundstellung ist in der Zeichnung mit strichpunktierten Linien dargestellt. Der Kurzhubzylinder 17 wird durch ein elektro-pneumatisches Schnellschluß-Magnetventil 19 angesteuert, das von einer Bogenkontrolleinrichtung elektrisch angesteuert wird und beinicht paßgerechter Bogenlage, bei Ausbleiben eines Bogens oder bei Doppelbogeneinzug in eine Stellung geschaltet wird, in der es den Kurzhubzylinder 17 mit einer Druckluftwelle verbindet. Der auf diese Weise betätigte Kolben des Kurzhubzylinders 17 verschwenkt über den Gabelhebel 16 die Welle 14, wodurch die Fanghaken 13 in Fangstellung gelangen und die Bogenzufuhr zur Maschine sperren. Liegt wieder ein paßgerechter Bogen an den Vordermarken 2 an, so schaltet die Bogenkontrolleinrichtung das Schnellschluß-Magnetventil 19 in seine Ausgangsstellung zurück, wodurch der Kolben des Kurzhubzylinders 17 entlastet wird und die Fanghaken 13 abgeschwenkt werden. Entkoppelt wird die Fangstellung für Maschinenlauf über das manuelle Signal "Papierlauf".The device for blocking the sheet feed consists of catch hooks 13 which are attached to a shaft 14. The shaft 14 is mounted below the system table 1 in bearings 15 and is pivoted via a fork lever 16 which can be pivoted by a pneumatic short-stroke cylinder 17 which is also attached to the system table 1. The short-stroke cylinder 17 contains a compression spring 18 which strives to move the piston of the cylinder into a basic position in which the catch hooks 13 are pivoted out of their catch position. This basic position is shown in the drawing with dash-dotted lines. The short-stroke cylinder 17 is controlled by an electro-pneumatic quick-closing solenoid valve 19, which is controlled electrically by a sheet control device and is switched into a position in which it does not fit the sheet, in the absence of a sheet or in the case of a double sheet feed, in a position in which it connects the short-stroke cylinder 17 to a compressed air shaft . The piston of the short-stroke cylinder 17 actuated in this way pivots the shaft 14 via the fork lever 16, as a result of which the catch hooks 13 reach the catch position and block the sheet feed to the machine. If there is again a fitting sheet on the front marks 2, the sheet control device switches the quick-closing solenoid valve 19 back into its starting position, thereby relieving the piston of the short-stroke cylinder 17 and the catch hooks 13 are pivoted away. The catch position for machine run is decoupled via the manual signal "paper run".

Claims (2)

1. Sheet feeder device for sheet treating and processing machines, particularly for sheet printing presses with front lays swingable periodically by means of a non-lockable cam drive, and a locking device controllable via a sheet checking unit which, on locking, holds the sheet on the feeder table,
characterised in that
in the downswinging phase of the front lays (2), the swinging movement is transferred only via rigid members (3, 4, 6, 7, 10, 11) of the cam drive and that the locking device is constituted by catch hooks (13) which are moved on a locking singal of the sheet checking unit by means of a positioning unit (16, 17) independent of the cam drive into a catch position on the feeder table (1).
2. Sheet feeder device according to Claim 1,
charaterised in that
the catch hooks (13) mounted swingably on the feeder table (1) are movable by means of a pneumatic short stroke cylinder (17) from their downwardly swung position into the catch position and the short stroke cylinder (17) is controllable via an electropneumatic rapid closure magnetique valve (19).
EP89115817A 1988-09-06 1989-08-28 Feeding attachment, particularly for sheet-printing machines Expired - Lifetime EP0361105B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89115817T ATE75665T1 (en) 1988-09-06 1989-08-28 SHEET FEED DEVICE, ESPECIALLY FOR SHEET PRINTING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3830260A DE3830260A1 (en) 1988-09-06 1988-09-06 BOWING DEVICE, ESPECIALLY FOR BOW PRINTING MACHINES
DE3839260 1988-09-06

Publications (2)

Publication Number Publication Date
EP0361105A1 EP0361105A1 (en) 1990-04-04
EP0361105B1 true EP0361105B1 (en) 1992-05-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115817A Expired - Lifetime EP0361105B1 (en) 1988-09-06 1989-08-28 Feeding attachment, particularly for sheet-printing machines

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EP (1) EP0361105B1 (en)
AT (1) ATE75665T1 (en)
DE (2) DE3830260A1 (en)
ES (1) ES2032086T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19543381C2 (en) * 1995-11-21 1999-06-10 Heidelberger Druckmasch Ag Gripper control for a cyclically swinging pre-gripper for single sheet transport in a sheet printing machine
DE102008010008B4 (en) 2008-02-20 2018-10-31 Koenig & Bauer Ag Method and device for blocking the sheet feed of a printing machine
DE102009008776B4 (en) 2008-03-17 2021-05-27 Heidelberger Druckmaschinen Ag Device for aligning sheets with stops
CN103662887B (en) * 2013-12-02 2016-11-23 温州旭弘机械有限公司 A kind of paper advance mechanism of cardboard binding machine
CN107757100A (en) * 2017-11-27 2018-03-06 东台市康宏纸箱厂 Pendulum-type front lay in a kind of combination for paper printing

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DE569729C (en) * 1931-02-05 1933-02-07 Kalle & Co Ag Process for aligning the sheets with the correct edges
DE1100043B (en) * 1958-08-15 1961-02-23 Leipziger Buchbindereimaschine Gripper on printing and bookbinding machines for gripping and holding sheets made of paper, cardboard or similar material
DE1786314B1 (en) * 1968-08-08 1971-11-04 Polygraph Leipzig DEVICE TO LOCK THE SHEET FEED
FR2092397A5 (en) * 1970-04-01 1972-01-21 Polygraph Leipzig
US3888478A (en) * 1974-05-23 1975-06-10 Sperry Rand Corp Sheet limiter
DD134862B1 (en) * 1978-02-23 1981-07-29 Fritz Pieper DEVICE FOR LOCKING THE GRIPPERS OF A PRE-GRIPPER

Also Published As

Publication number Publication date
ATE75665T1 (en) 1992-05-15
ES2032086T3 (en) 1993-01-01
DE3830260C2 (en) 1992-10-01
DE3830260A1 (en) 1990-03-15
DE58901332D1 (en) 1992-06-11
EP0361105A1 (en) 1990-04-04

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